>>> Ken Laidlaw <K.Laidlaw@roe.ac.uk> 02/20/98 01:53am >>> >>>>>>>>>>> I would say that a ten gallon tank (with plented of hiding=20 places) is easily big enough for a pair of Apistos and you=20 don't need to segregate them . If you find you need to=20 remove the male after spawning then just remove him. I=20 have never suffered the loss of an Apisto due to=20 male/female aggression, has anyone? >>>>>>> Ken, I have lost a male nijsseni. (heavily planted 20gal) With sp Swartzsaum (?sp) I had a trio in a tank (15g) , the females would = spawn within a day or two of each other. I believe if I am remembering = correctly we had one female steal the others fry and then lost her. Borelli, this one was my fault, a trio and two paired off and killed the = third female, before they spawned (10g) The only clear case in my mind was the nijsenni. Kathy